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检索条件"机构=State Key Laboratory of Traction and Control System of EMU and Locomotive"

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RESEARCH ON VIBRATION FATIGUE SPECTRUM METHOD OF CARBON FIBER COMPOSITE MATERIALS 30

RESEARCH ON VIBRATION FATIGUE SPECTRUM METHOD OF CARBON FIBE...

引用

30th International Congress on Sound and Vibration, ICSV 2024

作者： Wang, Yuzhu Kong, Deshuai Fan, Zinan Zhang, Shuang State Key Laboratory of Traction and Control System of EMU and Locomotive Beijing100081 China China Academy of Railway Sciences Locomotive & Car Research Institute Beijing Zongheng Electro-Mechanical Technology Co. Ltd. Beijing100094 China

ISBN: (纸本)9789090390581

The anisotropic properties of carbon fiber composite materials make the use of metal material vibration fatigue analysis methods in the analysis process unsuitable, especially efficient spectral analysis methods. This article presents a vibration fatigue spectrum analysis method suitable for carbon fiber composite materials by applying random excitation based on PSD spectrum and analyzing its specific fatigue life under specific PSD spectrum. And the effectiveness of this method was verified through a series of validation experiments. © 2024 Proceedings of the International Congress on Sound and Vibration. All rights reserved.

关键词： Vibration analysis

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A Fault Modeling Method for the Asynchronous Motor Based on the Stator Current 18

A Fault Modeling Method for the Asynchronous Motor Based on ...

引用

18th IEEE Conference on Industrial Electronics and Applications, ICIEA 2023

作者： Jiang, Wei Zhang, Kun Liu, Biao Zhou, Yijie Gou, Bin Xiong, Wei China Academy of Railway Sciences Corporation Limited State Key Laboratory for Traction and Control System of Emu and Locomotive Beijing China Southwest Jiaotong University School of Electrical Engineering Chengdu China

ISBN: (纸本)9798350312201

As the heart of the train traction system, the traction asynchronous motor is deeply related to the safety and reliability of trains. However, due to the long-term operation in the harsh environment, the motor is prone to malfunction and lead to system performance degradation. Therefore, this paper proposes a fault modeling method for the traction asynchronous motor based on stator current, where the stator inter-turn short circuit fault and broken rotor bar fault are taken into consideration. Firstly, the fault mechanism of the motor stator inter-turn short circuit fault and rotor broken bar fault are analyzed, and the fault characteristic of the stator current signals are obtained. Then the mathematical models of stator and rotor faults are constructed according to the equivalent physical models of stator inter-turn short circuit fault and rotor broken bar fault. Finally, the fault models are simulated to validate the effectiveness and applicability of the proposed method. © 2023 IEEE.

关键词： Induction motors

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Research on Boot Problem and Automatic Repair of an Embedded Real-time Operating system 2

Research on Boot Problem and Automatic Repair of an Embedded...

引用

2nd International Conference on Computer Technologies, ICCTech 2023

作者： Zhou, Haoshang Gao, Zhaoling Wang, Zhongfu Wang, Xiaopeng State Key Laboratory for Traction and Control System of EMU and Locomotive CRRC Dalian Electric Traction R&D Center Co. Ltd China School of Intelligence and Electronic Engineering Dalian Neusoft University of Information China

ISBN: (纸本)9781665455824

At present, in the communication between Electric Multiple Units (emu) and locomotive network control system, in order to ensure the stability of vehicle control and the accuracy and reliability of data recording, its key components - Central control Unit (CCU) and Event Record Machine (ERM) adopt an embedded real-time operation system. In order to facilitate debugging, the system needs to start Microsoft's DOS system before being called to start. Based on the feedback of the embedded real-time operating system startup failure from each locomotive and rolling stock depot, this paper will elaborate on its startup process and propose a solution that can automatically repair the startup problem, which has been tested in the laboratory to prove that this method can effectively avoid the system startup failure. © 2023 IEEE.

关键词： Program debugging

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Resilience-oriented critical load restoration for railway distribution systems in remote areas by coordination of photovoltaics and energy storage systems 3

Resilience-oriented critical load restoration for railway di...

引用

2024 3rd International Conference on Green Energy and Power systems, ICGEPS 2024

作者： Wang, Ying Liu, Weizhi Ma, Yingtao School of Electrical Engineering Beijing Jiaotong University Beijing100044 China Beijing Zongheng Electro-mechanical Technology Co. Ltd. State Key Laboratory for Traction and Control System EMU and Locomotive China Academy of Railway Sciences Corporation Limited Beijing100081 China

The utility power infrastructure is relatively weak and susceptible to extreme conditions in remote areas, so the resilience enhancement of the railway distribution system is essential to ensure the service to critical loads, such as communication and signal devices, to prevent undesirable crash events. After extreme events, distributed resources such as distributed photovoltaics (PVs) and energy storage systems (ESSs) can be coordinated to restore critical loads as soon as possible. In this paper, a critical load restoration method for railway distribution systems in remote areas is proposed. The PVs and ESSs are coordinated to restore the critical loads distributed along the railway line. The problem is formulated as a mixed integer linear program and solved by off-the-shelf solvers. Finally, the effectiveness of the method is validated through a real-world case in China. © Published under licence by IOP Publishing Ltd.

关键词： Energy storage

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Model-Based-Design of Four-Quadrant control Technology of traction Converter

Model-Based-Design of Four-Quadrant Control Technology of Tr...

引用

International Conference of Electrical, Electronic and Networked Energy systems, EENES 2024

作者： Yu, Xiaoman Ren, Baozhu Zhao, Hui Guo, Yang Zhang, Liyan CRRC Dalian R&D Co. Ltd. Dalian116052 China State Key Laboratory of Traction and Control System of EMU and Locomotive Dalian116052 China CRRC Dalian Co. Ltd. Dalian116045 China School of Electrical Engineering Dalian University of Technology Dalian116024 China

ISBN: (纸本)9789819618637

In the traditional development process of electric locomotive traction control software, there existed problems such as high labor costs, inconsistent development standards, difficult software verification, and high software maintenance costs. MBD (Model-Based-Design) and the automatic code generation technology were mostly used in the field of automotive electronics, promoted in several mainstream automobile factories, but had hardly ventured into the field of rail transit. The MBD method was applied to the development process of electric locomotive traction control software, to realize the model-based traction control logic and algorithm development in the MATLAB platform. The paper shows the process of designing the traction control model, generating the code and being downloaded to the traction control unit automatically, finally, testing the system with HIL (Hardware-In-Loop) semi-physical simulation. The four-quadrant waveforms met the design requirements. The results showed that it was feasible, efficient and economical to design the four-quadrant control software of the traction converter by the MBD method. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： MATLAB

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Research on Intelligent Diagnosis Algorithm for Electrical Faults of Induction Motor Stator and Rotor Based on Coordinate Transformation and Support Vector Machine 18

Research on Intelligent Diagnosis Algorithm for Electrical F...

引用

18th IEEE Conference on Industrial Electronics and Applications, ICIEA 2023

作者： Jiang, Wei Liu, Biao Zhou, Yijie Gou, Bin China Academy of Railway Sciences Corporation Limited State Key Laboratory for Traction and Control System of Emu and Locomotive Beijing China Tangshan Institute of Southwest Jiaotong University Southwest Jiaotong University Chengdu China Southwest Jiaotong University School of Electrical Engineering Chengdu China

ISBN: (纸本)9798350312201

As the key power source of train traction system, the safety and reliability of traction asynchronous motor operation is crucial. To improve the efficiency of vehicle maintenance, online monitoring of the working state of traction asynchronous motors has received increasing attention. This paper proposes a diagnosis algorithm based on the combination of coordinate transformation and support vector machine for traction asynchronous motors. Firstly, coordinate transformation can convert power frequency components into direct flow, facilitating the extraction of fault features. Then, from the perspective of data driven, this paper collects historical fault data under varying operating conditions and loads, and designs an intelligent fault diagnosis framework. Finally, a fault recognition classifier is trained based on support vector machines to identify stator inter turn short circuit and rotor bar breakage faults of traction asynchronous motors, and to guide accurate vehicle maintenance. © 2023 IEEE.

关键词： Support vector machines

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A Fault Diagnosis Method for Stator Inter-Turn Short Circuit Fault of Induction Motor Based on Multiple Signal Decomposition and Reconstruction 6

A Fault Diagnosis Method for Stator Inter-Turn Short Circuit...

引用

6th Asia Conference on Energy and Electrical Engineering, ACEEE 2023

作者： Jiang, Wei Zhou, Yijie Liu, Biao Xiong, Wei Zhang, Xin Gou, Bin China Academy of Railway Sciences Corporation Limited State Key Laboratory for Traction and Control System of EMU and Locomotive Beijing China University Southwest Jiaotong University Tangshan Institute of Southwest Jiaotong Chengdu China Southwest Jiaotong University School of Electrical Engineering Chengdu China

ISBN: (纸本)9798350312690

The characteristics of the stator inter-Turn short circuit fault of induction motor under light load conditions are inconspicuous, which may cause difficulty in fault diagnosis. To address this, a fault diagnosis method based on multiple signal decomposition and reconstruction is proposed in this paper. In the proposed method, the DC link current signal is selected to obtain obvious the characteristics of the stator inter-Turn short circuit fault. In the event of the stator inter-Turn short circuit fault, the fault characteristic frequency of the DC side current is derived. Then, the fault characteristic frequency extraction is realized based on multiple signal decomposition and reconstruction, such as Hilbert transform, the empirical mode decomposition (EMD), the signal reconstruction, the variational mode decomposition (VMD). With this, the fault diagnosis for the stator inter-Turn short circuit fault of induction motor is achieved. The effectiveness of the proposed scheme is verified by simulations and hardware-in-The-loop testing. © 2023 IEEE.

关键词： Stators

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Research on Leakage Inductance and Eddy Current Loss of Nanocrystalline High-Frequency Transformers 26

Research on Leakage Inductance and Eddy Current Loss of Nano...

引用

26th International Conference on Electrical Machines and systems, ICEMS 2023

作者： Liu, Yang Liu, Xue Yin, Zhenhuan Dong, Kan Cui, Dongdong Ma, Chi State Key Laboratory for Traction and Control System of EMU and Locomotive China Academy of Railway Science Corporation Limited Beijing China Key Laboratory of Power Electronics and Electric Drive Institute of Electrical Engineering Chinese Academy of Sciences China University of Chinese Academy of Sciences School of Electronic Electrical and Communication Engineering Beijing China

ISBN: (纸本)9798350317589

High-frequency transformers are a vital component of isolated DC/DC converters, and its leakage inductance can be adjusted by changing the winding method of the two-phase windings. Nanocrystalline magnetic cores have been widely applied due to their advantages in high-saturation flux and high magnetic permeability. However, their quite high electrical conductivity can easily lead to appreciable eddy current loss. This paper investigates the mechanism behind the eddy current loss caused by leakage flux by varying the number of windings cross turns, and verifies through simulation that the eddy current loss of nanocrystalline high-frequency transformers increases with increasing leakage inductance. © 2023 IEEE.

关键词： Inductance

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Capacity Planning of Distributed Photovoltaic Generation and Energy Storage systems for the traction Power Supply system of Electric Railway 8

Capacity Planning of Distributed Photovoltaic Generation and...

引用

8th IEEE International Conference on Energy Internet, ICEI 2024

作者： Huang, Li Wang, Ying Liu, Weizhi Ma, Yingtao Li, Shenglin Beijing Jiaotong University School of Electrical Engineering Beijing China State Key Laboratory for Traction and Control System of EMU and Locomotive China Academy Railway Sciences Corporation Limited Beijing Zongheng Electromechanical Technology Co.Ltd. Beijing China Shanghai Jiaotong University School of Electronic Information and Electrical Engineering Shanghai China

ISBN: (纸本)9798331523558

Although the current power industry distributed photovoltaic development for many years, how to integrate photovoltaic into the railway system existing power supply infrastructure is still not a consensus in the industry, how to determine the railway energy system planning of photovoltaic energy storage access needs to be studied. Taking the traction power supply system connected with distributed photovoltaic power generation and energy storage system as the research object, this paper explores the capacity planning method of optical storage system along railway line, which takes into account the whole life cycle cost of photovoltaic and energy storage equipment. On the basis of consulting data, this paper first defines the influence factors of the system required for capacity planning, including access method of PV and ESS, the Solar radiation conditions, the types of photovoltaic and energy storage equipment used, etc. Then, the system is modeled according to the selected parameters and constraints of equipment in planning stage and operation stage. Finally, the necessity is illustrated by comparing the difference of power purchase cost of railway system before and after introducing PV and ESS along the railway line, and the further evaluation of the role of the system is obtained by comparing the effect of different access methods, different electricity tariff policies and different light levels. © 2024 IEEE.

关键词： Power distribution planning

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Performance Analyses of a High-Frequency Transformers With Different Magnetic Cores

Performance Analyses of a High-Frequency Transformers With D...

引用

2024 IEEE Transportation Electrification Conference and Expo, Asia-Pacific, ITEC Asia-Pacific 2024

作者： Li, Yanlei Ma, Yingtao Zhang, Jiepin Wu, Feiao Li, Dong China Academy Of Railway Sciences Corporation Limited State Key Laboratory For Traction And Control System Of Emu And Locomotive Beijing100861 China China Academy Of Railway Sciences Corp. Ltd. Locomotive&Car Research Institute Beijing100861 China Beijing Zongheng Electromechanical Technology Co. Ltd. Beijing100861 China Beijing Jiaotong University School Of Electrical Engineering Beijing10044 China

ISBN: (纸本)9798331529277

Taking advantages of the high power density and high efficiency, High Frequency Transformers (HFT) have been widely applied in the electrified transportation. However, the low saturation flux density and large core loss has limited the increase of the power. In the paper, the core loss calculation method of HFT operated under high frequency non-sinusoidal excitation are presented. Then the flux density and efficiency of HFT with double E-type and C-type core structures are compared. The finite element method was taken to analyze the performances of HFT with different core materials and different operation current waveforms. The relations of the efficiency with the power, core clearance, and operation frequency are also studied. Then the experimental results are carried out on the prototype of 60 kW HFT to verify the accuracy of the calculation results. © 2024 IEEE.

关键词： Distribution transformers

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